//=========================================================================
// Copyright (C) 2024 The C++ Component Model(COMO) Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//=========================================================================

#include <sys/prctl.h>
#include <unistd.h>
#include <sched.h>
#include "TimeWheelUtils.h"

namespace como {

int TimeWheelUtils::PrepareEnv(void)
{
    prctl(PR_SET_TIMERSLACK, 10000U, 0, 0, 0);

    const pid_t pid {getpid()};
    struct sched_param sp = {.sched_priority = 90};
    if (sched_setscheduler(pid, SCHED_FIFO, &sp) == -1) {
        //perror("sched_setscheduler");
        return 1;
    }

    return 0;
}

} // namespace como
